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1 | #ifndef ALIGENMC_H | |
2 | #define ALIGENMC_H | |
3 | /* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
4 | * See cxx source for full Copyright notice */ | |
5 | ||
6 | /* $Id$ */ | |
7 | ||
8 | ||
9 | // Base class for generators using external MC generators. | |
10 | // For example AliGenPythia using Pythia. | |
11 | // Provides basic functionality: setting of kinematic cuts on | |
12 | // decay products and particle selection. | |
13 | // andreas.morsch@cern.ch | |
14 | ||
15 | #include<TClonesArray.h> | |
16 | #include <TArrayI.h> | |
17 | #include <TString.h> | |
18 | class TParticle; | |
19 | ||
20 | class AliGeometry; | |
21 | class AliGenEventHeader; | |
22 | #include "AliGenerator.h" | |
23 | #include "AliDecayer.h" | |
24 | ||
25 | class AliGenMC : public AliGenerator | |
26 | { | |
27 | public: | |
28 | AliGenMC(); | |
29 | AliGenMC(Int_t npart); | |
30 | virtual ~AliGenMC(); | |
31 | virtual void Init(); | |
32 | virtual void SetForceDecay(Decay_t decay = kAll) {fForceDecay = decay;} | |
33 | virtual void SetCutOnChild(Int_t flag = 0) {fCutOnChild = flag;} | |
34 | virtual void SetChildMomentumRange(Float_t pmin = 0, Float_t pmax = 1.e10) | |
35 | {fChildPMin = pmin; fChildPMax = pmax;} | |
36 | virtual void SetChildPtRange(Float_t ptmin = 0, Float_t ptmax = 20.) | |
37 | {fChildPtMin = ptmin; fChildPtMax = ptmax;} | |
38 | virtual void SetChildPhiRange(Float_t phimin = 0., Float_t phimax = 360.) | |
39 | {fChildPhiMin = TMath::Pi()*phimin/180; | |
40 | fChildPhiMax = TMath::Pi()*phimax/180;} | |
41 | virtual void SetChildThetaRange(Float_t thetamin = 0, Float_t thetamax = 180) | |
42 | {fChildThetaMin = TMath::Pi()*thetamin/180; | |
43 | fChildThetaMax = TMath::Pi()*thetamax/180;} | |
44 | virtual void SetChildYRange(Float_t ymin = -12, Float_t ymax = 12) | |
45 | {fChildYMin = ymin; | |
46 | fChildYMax = ymax;} | |
47 | virtual void SetMaximumLifetime(Float_t time = 1.e-15) {fMaxLifeTime = time;} | |
48 | ||
49 | virtual void SetGeometryAcceptance(AliGeometry * GeometryAcceptance=0) {fGeometryAcceptance = GeometryAcceptance;} | |
50 | ||
51 | virtual void SetPdgCodeParticleforAcceptanceCut(Int_t PdgCodeParticleforAcceptanceCut=0) {fPdgCodeParticleforAcceptanceCut = PdgCodeParticleforAcceptanceCut;} | |
52 | ||
53 | virtual void SetNumberOfAcceptedParticles(Int_t NumberOfAcceptedParticles=2) {fNumberOfAcceptedParticles = NumberOfAcceptedParticles;} | |
54 | ||
55 | virtual Bool_t CheckAcceptanceGeometry(Int_t np, TClonesArray* particles); | |
56 | virtual void SetProjectile(TString proj="P", Int_t a = 1, Int_t z = 1) | |
57 | {fProjectile = proj; fAProjectile = a; fZProjectile = z;} | |
58 | virtual void SetTarget(TString tar="P", Int_t a = 1, Int_t z = 1) | |
59 | {fTarget = tar; fATarget = a; fZTarget = z;} | |
60 | virtual void SetCrossingAngle(Float_t phiX, Float_t phiY) {fXingAngleX = phiX; fXingAngleY = phiY;} | |
61 | virtual void Boost(); | |
62 | virtual void SetDyBoost(Double_t dyBoost = 0.) {fDyBoost = dyBoost;} | |
63 | virtual void BeamCrossAngle(); | |
64 | virtual void AddHeader(AliGenEventHeader* header); | |
65 | ||
66 | protected: | |
67 | // check if particle is selected as parent particle | |
68 | Bool_t ParentSelected(Int_t ip) const; | |
69 | // check if particle is selected as child particle | |
70 | Bool_t ChildSelected(Int_t ip) const; | |
71 | // all kinematic selection cuts go here | |
72 | Bool_t KinematicSelection(const TParticle *particle, Int_t flag) const; | |
73 | Int_t CheckPDGCode(Int_t pdgcode) const; | |
74 | ||
75 | protected: | |
76 | TClonesArray fParticles; //!Particle List | |
77 | TArrayI fParentSelect; //!Parent particles to be selected | |
78 | TArrayI fChildSelect; //!Decay products to be selected | |
79 | Int_t fCutOnChild; // Cuts on decay products (children) are enabled/disabled | |
80 | Float_t fChildPtMin; // Children minimum pT | |
81 | Float_t fChildPtMax; // Children maximum pT | |
82 | Float_t fChildPMin; // Children minimum p | |
83 | Float_t fChildPMax; // Children maximum p | |
84 | Float_t fChildPhiMin; // Children minimum phi | |
85 | Float_t fChildPhiMax; // Children maximum phi | |
86 | Float_t fChildThetaMin; // Children minimum theta | |
87 | Float_t fChildThetaMax; // Children maximum theta | |
88 | Float_t fChildYMin; // Children minimum y | |
89 | Float_t fChildYMax; // Children maximum y | |
90 | Float_t fXingAngleX; // Crossing angle X | |
91 | Float_t fXingAngleY; // Crossing angle Y | |
92 | Decay_t fForceDecay; // Decay channel forced | |
93 | Float_t fMaxLifeTime; // Maximum lifetime for unstable particles | |
94 | Double_t fDyBoost; // dy for boost into lab frame | |
95 | AliGeometry* fGeometryAcceptance; // Geometry to which particles must be simulated | |
96 | Int_t fPdgCodeParticleforAcceptanceCut; // Abs(PDG Code) of the particle to which the GeometryAcceptance must be applied | |
97 | Int_t fNumberOfAcceptedParticles; // Number of accepted particles in GeometryAcceptance with the right Abs(PdgCode) | |
98 | Int_t fNprimaries; // Number of produced and stored particles | |
99 | ||
100 | private: | |
101 | AliGenMC(const AliGenMC &MC); | |
102 | AliGenMC & operator=(const AliGenMC & rhs); | |
103 | ||
104 | ClassDef(AliGenMC,7) // AliGenerator implementation for generators using MC methods | |
105 | }; | |
106 | #endif | |
107 | ||
108 | ||
109 | ||
110 | ||
111 |